基于二端口网络理论，采用等值双端电源相分量法进行跨线短路故障计算。
An equivalent two source phase domain method for calculating interline fault in the double circuit line is presented.
运用理想电源转移规则，可以把这些误差源转移到放大器等值电路的输入支路。
According to the rules of ideal source transformation, we are able to transfer the equivalent error sources to the input branch of the amplifier's equivalent circuit.
在感应电动机等效电路的基础上，分析了当电源频率发生改变时，等值电路中主要参数的变化规律。
The principle of main parameter of the with the change of source frequency were given on the base of analyzing the equivalent circuit of induction motor.
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